ASUS P5QC Motherboard - Intel P45, Socket 775, ATX, DDR3/DDR2, Audio, PCI Express 2.0, Gigabit LAN, Logo

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Posted on Jan 18, 2009

Asus P5QC mobo won't recognize personal storage through USB

Just installed this new mobo last week. Have mouse and keyboard etc etc hooked up in the USB's in back and they work fine. But i tried to plug in a flash drive to both my front USB's then the backs and neither will read. The port is getting power because my drive lights up, but windows gives me an error saying it's unreadable. Have tried with 4 different flash drives including one out of the box. Also tried hooking up my ext HD and won't read it.

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barez

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  • Posted on Feb 04, 2009
barez
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I have this problem too but i know if you disable usb2 in bios it will solve the problem but speed is too slow and i cant solve this problem (speed)
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  • Posted on Jan 19, 2009
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Why cant i get my 4x 2gb ddr2 800 to work on my asus p5qc mobo? it will run fine with just 4gb 2x ddr2 800 but when i add the other 2x ram i get black screen at boot

Be sure to check which slots you are putting them in, stay within the same colors as to which needs to be put in.

This may be why, looks like your using DDR2
DDR2 1066MHz DIMMs work only on the black slots for one DIMM per channel. Ensure to install the DDR2 1066MHz DIMMs ONLY on the BLACK slots!

This may be the case for all speeds of DDR2
http://www.asus.com/Motherboards/Intel_Socket_775/P5QC/
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